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Which one of the following statemetns is...

Which one of the following statemetns is correct with reference to elastic collision between two bodies?

A

Momentum and total energy are conserved but kinetic energy may be changed into some ther form of energy

B

Kinetic energy and total energy are both conserved but momentum is only if the two bodies have equal masses momentum is only if the two bodies have equal masses.

C

Momentum, kinetic energy and total energya re all conserved.

D

Neither momentum nor kinetic energy need to be conserved but total energy must be conserved.

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